The tables below present information about the Company’s financial assets and liabilities that are measured and carried at fair value and indicate the level within the fair value hierarchy of the valuation techniques it utilizes to determine such fair value:

	Fair Value Measurement as of December 31, 2020
	Total		Level 1		Level 2		Level 3
	(in thousands)
Assets
Money market funds	$	629,440	$	629,440	$	—	$	—
Government and government agency bonds		1,037,981		1,037,981		—		—
Strategic equity investments		38,799		3,699		—		35,100
Certificates of deposit		250		250		—		—
Total assets	$	1,706,470	$	1,671,370	$	—	$	35,100

Liabilities
Contingent consideration	$	50,800	$	—	$	—	$	50,800
Total liabilities	$	50,800	$	—	$	—	$	50,800

	Fair Value Measurement as of December 31, 2019
	Total		Level 1		Level 2		Level 3
	(in thousands)
Assets
Money market funds	$	203,410	$	203,410	$	—	$	—
Government and government agency bonds		809,159		809,159		—		—
Strategic equity investments		31,937		1,937		—		30,000
Certificates of deposit		1,001		1,001		—		—
Total assets	$	1,045,507	$	1,015,507	$	—	$	30,000

Liabilities
Contingent consideration	$	5,200	$	—	$	—	$	5,200
Total liabilities	$	5,200	$	—	$	—	$	5,200

The Company’s assets with fair value categorized as Level 1 within the fair value hierarchy include money market funds, government and government agency bonds, certificates of deposit, and the Company’s strategic investment in Lysogene, a publicly traded company in France, as more fully described in Note 3, License and Collaboration Agreements. Certain of the government and government agency bonds and corporate bonds are publicly traded fixed income securities and are presented as cash equivalents on the consolidated balance sheets.

The Company’s assets with fair value categorized as Level 3 within the fair value hierarchy consists of a strategic investment in Series A preferred stock of Lacerta as more fully described in Note 3, License and Collaboration Agreements and a strategic investment in Series A preferred stock of another private company. The fair value of the Lacerta investment was initially based on a cost approach corroborated by the Black-Scholes option pricing model. The most significant assumptions in the option pricing model include historical volatility of similar public companies, estimated term through Lacerta’s potential exit and a risk-free rate based on certain U.S. Treasury rates. The investment in the private company is recorded at fair value at the time of purchase as measured by the investment cost. At the end of each reporting period, the fair value of investments in equity securities will be adjusted if the issuer were to issue similar or identical equity securities or when there is a triggering event for impairment. There were no changes in the fair value of the strategic investments during the year ended December 31, 2020.

The Company’s contingent consideration liability with fair value categorized as Level 3 within the fair value hierarchy relate to the regulatory-related contingent payments to Myonexus selling shareholders as well as to certain academic institutions under separate license agreements that meet the definition of a derivative. For more information related to Myonexus, please read Note 3, License and Collaboration Agreements. The contingent consideration liability was estimated using an income approach based on the probability-weighted expected cash flows that incorporated industry-based probability adjusted assumptions relating to the achievement of the milestone and thus the likelihood of making the payments. This fair value measurement was based upon significant inputs not observable in the market and therefore represented a Level 3 measurement. Significant changes which increase or decrease the probabilities of achieving the milestone or shorten or lengthen the time required to achieve the milestone would result in a corresponding increase or decrease in the fair value of the liability. At the end of each reporting period, the fair value is adjusted to reflect the most current assumptions through earnings.

There were no changes transfers between Levels 1, 2 and 3 during the year ended December 31, 2020. The following table represents a roll-forward of the fair value of Level 3 financial liabilities:

An increase of $0.6 million was recorded during the year ended December 31, 2020, to account for new contingent consideration liabilities associated with new license agreements with certain academic institutions that meet the definition of a derivative. An increase of $45.0 million was recorded during the year ended December 31, 2020, to account for the change in fair value of existing contingent consideration liabilities. This change, which is recorded as a loss on contingent consideration in the Company’s consolidated statements of operations and comprehensive loss, was a result of updates made to certain inputs and assumptions impacting the probability-weighted expected cash flows, principally the probability of success of the underlying programs, the estimate of the amount of payments to be ultimately made, and the estimate of the year that the payments are expected to be made.

The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents, accounts receivable and accounts payable approximate fair value because of the immediate or short-term maturity of these financial instruments. For fair value information related to the Company’s debt facilities, please read Note 13, Indebtedness.